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Planet Controversy

Science > Astronomy > Solar System > Dwarf Planets > Pluto and Charon > Planet Controversy

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Astronomer Upset at New Planet Proposal - http://www.washingtonpost.com/wp-dyn/content/article/2006/08/19/AR2006081900344.html
Washington Post article describes Michael Brown's disagreement with a proposal to expand the definition of a planet to include, among others, his own discovery.

CBS News: Pluto: Planet Or Junk Snowball? - http://www.cbsnews.com/stories/2005/02/14/tech/main673946.shtml
Outlines the history of the debate.

Gravity Rules: The Nature of Planethood - http://www.spacedaily.com/news/outerplanets-04b.html
Article discussing possible definitions that qualify objects, such as Pluto and Sedna in the Kuiper Belt, as being planets or not.

IAU Resolutions 5&6 - http://www.iau.org/static/resolutions/Resolution_GA26-5-6.pdf
The International Astronomical Union's definition of a planet in the Solar System and ruling on the classification of Pluto.

Is Pluto a Giant Comet? - http://cfa-www.harvard.edu/icq/ICQPluto.html
Discusses related discoveries and excerpts.

Much ado about Pluto - http://science.nasa.gov/newhome/headlines/ast17feb99_1.htm
News release from NASA affirming Pluto's planetary status.

National Geographic News: Pluto: Planet or Comet? - http://news.nationalgeographic.com/news/2001/02/0216_Pluto.html
Discusses Pluto's similarity to other Kuiper Belt objects, and introduces a 5-way classification scheme for solar system objects to break down the lumping together of dissimilar planets.

New Horizons: Is Pluto a Planet? - http://pluto.jhuapl.edu/science/everything_pluto/11_pluto_planet.html
Brief discussion of the controversy, and suggested classification of "Ice Dwarf" for Pluto, Charon, Sedna, and similar objects.

PBS NewsHour: Pluto Debate - http://www.pbs.org/newshour/indepth_coverage/science/pluto/index.html
Reports regarding the controversy over Pluto's classification, focusing on pop culture influences and newsworthiness.

SciZone - Ontario Science Centre: Pluto: Planet or Not? - http://www.ontariosciencecentre.ca/scizone/brainz/hamilton/pluto_planet_or_not.asp
Brief nontechnical introduction to Pluto and similar objects such as Sedna and Quaoar, and a summary of the features that make Pluto different than the other planets. Includes a capsule summary of the arguments for and against calling Pluto a planet.

SPACE.com: Pluto's Planet Status Could be Jeopardized by Sedna Discovery - http://www.space.com/scienceastronomy/sedna_pluto_040317.html
Discusses the ongoing debate over the definition of the term "planet", and suggests that if Pluto should be considered a planet, so should Sedna and similar bodies.

What is a Planet - http://astron.berkeley.edu/~basri/defineplanet/whatsaplanet.htm
Reviews newly-discovered objects that stretch the definition of the term, including massive superjupiters, free-floating planets, and other exoplanets. Suggests a definition based on the way an object is formed. From astronomer Gibor Basri.

When Is a Planet Not a Planet? - http://www.theatlantic.com/issues/98feb/pluto.htm
Articles discusses the debate whether Pluto should be included among the planets. [Atlantic Monthly]

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